| Lens Specifications | |
|---|---|
| Name | Sigma 8mm f/4 EX Circular Fisheye |
| Image Circle | 35mm |
| Type | Fisheye Prime |
| Focal Length | 8mm |
| APS Equivalent | 1.5x: 12mm; 1.6x: 12.8mm |
| Max Aperture | f/4 |
| Min Aperture | f/32 |
| Diaphragm Blades | 5 |
| Lens Construction | 10 Elements in 6 Groups |
| Diagonal Angle of View(Based on image circle) | 180 degrees |
| Focus Details | |
| Front Element Rotation | ? |
| Zoom System | n/a |
| Closest Focus | 20cm / 7.9 in. |
| Magnification Ratio | 0.07x / 1:13.9 |
| Filter Size | Rear (Gelatin Filter) |
| Dimensions(Length x Diameter) | 63mm x 73.5mm / 2.5 in. x 2.9 in. |
| Weight | 320g / 11.3 oz |
| Notes | Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax; Included Accessories: Gelatin Filter Holder, Fitted, Padded Case |
| Typical Online Price | US$599.00 |
